Friday December 28 - Wednesday January 9, 2019


Problems with email previews in Slack

Technical Summary:

On December 26th at 2:32 PM PST, we discovered that a small percentage of emails forwarded into some workspaces using our Email Ingestion feature were appearing blank. After investigating the issue, it was determined that the process responsible for handling these emails was occasionally failing and returning an empty file. A change was made to detect and retry the processing of any emails received in this state, and the Email Ingestion feature returned to full operation on December 28th at 1:43 PM PST.

7:28 AM PST

We've resolved the issue with email previews in Slack and they should now be displaying as expected. Thanks for bearing with us. If you continue to experience any trouble, please reach out to us at for further assistance.

1:52 PM PST

Some users may be experiencing issues with emails to Slack displaying incorrectly. We are actively investigating the cause of the trouble, and apologise for the inconvenience.

6:51 AM PST

Services affected